Subtract 28/27 from 18/30
1st number: 18/30, 2nd number: 1 1/27
18/30 - 28/27 is -59/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
18/30 = 18 × 9/30 × 9 = 162/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
28/27 = 28 × 10/27 × 10 = 280/270 - Subtract the two like fractions:
162/270 - 280/270 = 162 - 280/270 = -118/270 - After reducing the fraction, the answer is -59/135
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